Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
  • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
  • E21B25/005—Above ground means for handling the core, e.g. for extracting the core from the core barrel
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
  • B23D21/00—Machines or devices for shearing or cutting tubes
  • B23D21/02—Machines or devices for shearing or cutting tubes otherwise than in a plane perpendicular to the axis of the tube, e.g. for making mitred cuts, for making bicycle frames
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
  • B26D3/001—Cutting tubes longitudinally
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
  • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
  • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
  • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
  • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
  • B26D1/18—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable carriage
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
  • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
  • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
  • B26D7/01—Means for holding or positioning work
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
  • G01N1/00—Sampling; Preparing specimens for investigation
  • G01N1/02—Devices for withdrawing samples
  • G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/02—Other than completely through work thickness
  • Y10T83/0267—Splitting
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/02—Other than completely through work thickness
  • Y10T83/0267—Splitting
  • Y10T83/0281—By use of rotary blade
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T83/00—Cutting
  • Y10T83/02—Other than completely through work thickness
  • Y10T83/0267—Splitting
  • Y10T83/0281—By use of rotary blade
  • Y10T83/0289—Plural independent rotary blades

Definitions

• the present invention relates to cutting apparatus and is more particularly, although not exclusively, concerned with an inner tube splitter for splitting inner tubes used to obtain core samples.
• the inner tube must be cut. The cutting process may contaminate the sample as the inner tube is cut.
• Each cutter assembly preferably comprises at least one cutter wheel which is adjustable to determine the depth of cut along the length of the tube.
• each cutter assembly may include at least one stabilising device that stabilises the tube in each cutting position.
• a stabilising device may comprise at least one roller element.
• each roller element comprises a diabolo roller.
• each cutter assembly may further include a tube support for supporting the tube in each cutting position.
• the support track may include a tube support for supporting the tube in each cutting position.
• each cutter assembly comprises a frame mountab!e on the support track.
• each cutter wheel may be rotatable with respect to at least a portion of the frame about a longitudinal axis extending along and parallel to the support track.
• first and second cutter wheels may be provided, at least one of the first and second cutter wheels being rotatable with respect to the at least a portion of the frame to define an angle between the first and second cutter wheels. Additionally, the first and second cutter wheels may define an angle. Such an angle may substantially be in the range between 30° and 180°.
• Two cuts are preferably provided along the length of the receptacle to define the portion that is to be removed to produce the aperture.
• the two cuts are produced substantially simultaneously.
• the portion of the receptacle that is removed comprises a segment of a circle.
• the segment of the circle preferably subtends an angle substantially in the range between 30° and 180°.
• Figure 1 illustrates a perspective view of cutting apparatus in accordance with the present invention
• FIGS 3 to 6 respectively illustrate various configurations of cutter wheels that can be used in the cutting apparatus of Figure 1.
• the inner tubes are cut longitudinally along their entire length so that a portion of the tube can readily be removed. This provides direct access to the core sample within the inner tube.
• vibrations from the cutting operation are not transferred to the core sample thereby changing it properties. Damage to the core is also prevented when compared to a conventional rotating circular saw.
• the core sample is protected against shocks, contamination, cracks and intrusion using the present invention.
• lengths of up to 9m (30ft) can be cut to reveal the core sample for visual inspection along the entire length.
• the present invention is safe and easy to use and does not provide any loose cuttings that may be hazardous to the working environment or may contaminate the core sample.
• the present invention can also be used to cut inner tubes made of different materials, for example, those made of aluminium, steel or fibregiass.
• the support track 110 includes two track elements 1 12, 114 arranged on either side of a central portion 1 16 that supports the tube 150.
• the two track elements 112, 114 are used to guide the cutter wagon 130 along the length of the support track 110 as it cuts the tube 150.
• Track element 1 14 is shown more clearly in Figure 2.
• the cutter wagon 130 will be described in more detail below with reference to Figure 2.
• the tube support member 120 forms part of the cutter wagon 130 and moves with it along the central portion 1 16 of the support track 1 10 under control of the drive arrangement as the tube 150 is cut.
• the cutter wagon 130 and tube support member 120 may be stationary and the tube 150 is moved relative thereto to provide the cutting operation.
• the drive arrangement 140 includes a pulley 142 mounted on the cutter wagon 130 and a drive wire 144 that is fixed to a stop 146 and to a winding mechanism (not shown) within the drive arrangement 140.
• the drive wire 144 passes from stop 146, through the pulley 142 and into the drive arrangement 140.
• Activation of the winding mechanism within the drive arrangement 140 shortens the drive wire 144 to pull the cutter wagon 130 towards the drive arrangement 140 in the direction of arrow TV.
• the cutter wagon 130 comprises a frame 132 which includes guide runners 134, 136 that engage respective ones of the track elements 12, 1 14 as shown more clearly in Figure 2.
• FIG 2 an end view of the cutting apparatus 100 is shown. Components that have previously been described with reference to Figure 1 are referenced the same.
• the frame 132 of the cutter wagon 130 is not shown for clarity.
• diabolo rollers are described which effectively provide two contact surfaces with the tube that is being guided and/or supported during the cutting operation, other means of holding the tube in the correct position against the tube support 120 for cutting may be employed.
• each cutting wheel 170, 180 is mounted within a support block 175, 185 which can be adjusted to ensure that its associated cutting wheel 170, 180 is in the correct position to provide the required depth of cut, that is, it cuts only the tube 150 and does not extend into the core sample (not shown).
• the cutting wheels 170, 180 are arranged to cut the tube to produce two identical portions, each subtending an angle of 180°, that allow one portion to be separated from the other portion thereby allowing a visual inspection of the core sample contained therein.
• a small cutter wheel assembly 200 is shown in which the cutter wheel assembly is mounted vertically with respect to the frame 132.
• Figure 4 shows a large cutter wheel assembly 210 that is also mounted vertically with respect to the frame 32.
• respective small and large cutter wheel assemblies 220, 230 are shown that are mounted horizontally or laterally with respect to the frame 132.
• the cutter wheel assemblies 220, 230 can be used in the specific embodiment of the cutting apparatus described above with reference to Figures 1 and 2.

Landscapes

• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Forests & Forestry (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Sampling And Sample Adjustment (AREA)

Applications Claiming Priority (2)

Publications (1)

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Family Applications (1)

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Citations (1)

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• 2012
  • 2012-01-11 US US13/979,275 patent/US9957764B2/en active Active
  • 2012-01-11 WO PCT/EP2012/050394 patent/WO2012095468A2/en active Application Filing
  • 2012-01-11 CA CA 2823777 patent/CA2823777A1/en not_active Abandoned
  • 2012-01-11 EP EP12700182.4A patent/EP2663729A2/de not_active Withdrawn
  • 2012-01-11 AU AU2012206560A patent/AU2012206560A1/en not_active Abandoned

Patent Citations (1)

Non-Patent Citations (1)

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